Question

calcule a raiz ou 0 das funções:

Answer 1

a)
$3x + 12 = 0 \\ 3x = - 12 \\ x = \frac{ - 12}{3} \\ x = - 4$
b)
$7x - 28 = 0 \\ 7x = 28 \\ x = \frac{28}{7} \\ x = 4$
c)
$- 35 + 7x = 0 \\ 7x = 35 \\ x = \frac{35}{7} \\ x = 5$
d)
$- 6x + 18 = 0 \\ - 6x = - 18 .( - 1) \\ 6x = 18 \\ x = \frac{18}{6} \\ x = 3$